Determining the level of development for BIM implementation in large-scale projects

Purpose Proper definition of level of development (LOD) is one of the significant issues in building information modeling (BIM) applications; however, it is still not adequately addressed during BIM implementations. The purpose of this paper is to investigate and describe the current practice in defining the LOD in large-scale BIM-based projects and identify the challenges and solutions that were provided. Design/methodology/approach Four case studies were performed at four different types of large-scale projects to depict the current practice in determining the LOD and the required properties of elements that are going to be included in a BIM model. Semi-structured face-to-face interviews were performed to collect information from six professionals from four international firms. Findings The findings of the case studies revealed that defining LOD is an ambiguous process and requires high-cumulated experience. The results provide the challenges, adopted solutions and lessons learned. It was highlighted that the cost of including an element or related information in the model should be compared to the benefit of having that information in the model from the perspective of defined BIM uses. Research limitations/implications The findings are based on the projects that were performed in three developing countries. However, the main contractors were international companies and the construction management firms were well-known companies in the USA. In the future, additional case studies can be performed in other countries to identify similarities and regional differences. Practical implications The results of this study can be used to highlight the current needs in determining the LOD and guide the efforts for developing standards and policies in the AEC sector to streamline BIM adoption process in practice. The practitioners can utilize the findings of this study to increase their efficiency in adopting BIM and to decrease the time loss and cost overruns. Originality/value Most of the previous studies investigated the benefits and challenges when adopting BIM, and few of them considered LOD definition as a core part of this process. This study specifically investigated the current practice in determining the LOD and the required properties of elements that are going to be included in a BIM model. It also described the applied solutions and lessons learned in the case studies. </jats:sec

Identification of information requirements for implementing Building Information Modeling based on model uses

This study aimed to provide guidance in adopting BIM, specifically in determining the level of development of the components in a model. The main objective was to identify the information items to be included in a model based on the required BIM uses. Semi-structured face-to-face interviews were conducted with nine professionals to identify the information items that are required for the selected BIM uses. The professionals filled out a form by selecting the required information items from a list of component properties for specific BIM uses. The responses were analyzed to determine the most frequently selected information items for each BIM use. The results were validated via literal replication and external validation. The main properties that were most frequently selected were determined for two types of building components, duct and pipe, and limited to five BIM uses. The study revealed that the most frequently selected properties and related BIM modeling effort varied based on the BIM use/s required in different project types. The list of identified information items can be used by the practitioners when defining the properties required to prepare a BIM model for the selected BIM uses. The practitioners can utilize the findings of this study to increase their efficiency in adopting BIM and decrease the time and effort loss and cost overruns while adopting BIM. Although the previous studies emphasized that determination of the right level of development from the very beginning of the construction process is critical, guidance on which information items are required are lacking in the literature. This study provided guidance on how the required properties of elements that are going to be included in a BIM model changes based on BIM uses. Future studies can investigate the information needs required for other types of components and for other BIM uses.</jats:p